Siemens SINUMERIK 840C - Manual (Page 1107)

12 Functional Descriptions 08.96
12.33.1 Introduction
Function generator
for FFT analysis
(speed controller)
Filter 1
Filter 2
611D:
Speed feedforward
control setpoint
Speed
setpoint filter
Speed
setpoint limitation
Speed
controller P gain
611D:
Weight compensation/
feedforward control torque
Torque setpoint
limitation
Torque setpoint
limitation
Speed controller
reset time
Integrator
feedback
Speed actual value
monitoring
torque setpoint
limitation = 0
Torque- to-cross-
current conversion
Current setpoint filter
Current setpoint limitation
MSD field control
FDD field setpoint =0
Ust
–
d Ust
–
q
T S R
I
d
I
q
Filter 4
Filter 3
Filter 2
Filter 1
iq
–
set
i
–
set
n
–
act
ENC
M
U
dq U
RST
Function generator
for FFT analysis
(current controller)
Current control
loop
Speed control loop
611D:
Filters 1-4 in current
controller
n
–
set
&
Fig. 12-1 Overview of speed and current control loops
12–332 © Siemens AG 1992 All Rights Reserved 6FC5197- AA50
SINUMERIK 840C (IA)